JP6485165B2 - Tapered roller end face grinding device, tapered roller manufacturing method, tapered roller bearing manufacturing method, and rotating device manufacturing method - Google Patents

Description

  The present invention relates to an improvement of an end surface grinding apparatus for a roller-shaped member for processing a large-diameter side end surface of a tapered roller constituting a tapered roller bearing into a spherical shape.

  Tapered roller bearings as shown in FIG. 12 are incorporated in the rotation support portions of various rotating devices. This tapered roller bearing 1 is described in Patent Document 1, and includes an outer ring 2 and an inner ring 3 that are arranged concentrically with each other, a plurality of tapered rollers 4 and 4, and a cage 5. Out of these, the outer ring 2 has a concave outer ring raceway 6 on the inner peripheral surface. The inner ring 3 is disposed on the inner diameter side of the outer ring 2 and has a partially conical convex inner ring raceway 7 on the outer peripheral surface. Further, a large-diameter side collar 8 is formed at the large-diameter end of the outer peripheral surface of the inner ring 3, and a small-diameter collar 9 is formed at the small-diameter end, respectively. It is formed in a protruding state. Each of the tapered rollers 4 and 4 is disposed between the outer ring raceway 6 and the inner ring raceway 7 so as to roll freely. In this state, the radially inner end of each small-diameter side end face 10 of each of the tapered rollers 4 and 4 is opposed to the axially inner side face 11 of the small-diameter side flange 9, and The radially inner half is opposed to the axially inner side surface 13 of the large-diameter side flange 8. The cage 5 is for holding the tapered rollers 4 and 4.

  The tapered roller bearing 1 described in Patent Document 1 as described above has a sliding contact portion between the axial inner side surface of the large-diameter side flange 8 and the large-diameter side end surface 12 of each tapered roller 4, 4. In order to keep the PV value (a product of the surface pressure P and the sliding speed V, a parameter indicating the influence on wear) low, the large-diameter side end surfaces 12 of the tapered rollers 4 and 4 are spherical surfaces. The shape of the large-diameter end face 12 of each of the tapered rollers 4 and 4 can be formed by, for example, a grinding apparatus described in Patent Document 2.

The grinding apparatus described in Patent Document 2 includes an upper board, a lower board, a cage, and a grindstone.
Among these, the upper board is a substantially disk-shaped member, and is rotationally driven by a drive source in a state where the upper board is pressurized downward by a pressurizing device disposed above the upper board. The lower board is a substantially disk-like member arranged below the upper board, and is rotationally driven in the direction opposite to the upper board by the drive source. The radially outer end portion of the upper surface of such a lower plate extends over the entire circumference and faces the radially outer end portion of the lower surface of the upper plate. The retainer is a disk-shaped member disposed in a space formed between the upper surface of the upper plate and the lower surface of the lower plate so as to be capable of relative rotation with respect to the upper and lower plates. is there. In such a cage, a plurality of pockets for holding tapered rollers, which are workpieces, are formed at a plurality of locations in the circumferential direction of the radially outer end portion. Moreover, the said grindstone is arrange | positioned in the circumferential direction one location of the radial direction outer side of the said holder | retainer, and is rotationally driven by the drive source.

  Such a grinding apparatus described in Patent Document 2 pressurizes the upper board toward the lower board by the pressurizing apparatus, and rotates the upper board and the lower board in a state where the upper board and the lower board are rotated. Each tapered roller held in each pocket of the cage is sandwiched between a radially outer end portion of the lower surface of the board and a radially outer end portion of the upper surface of the lower board. Then, each of these tapered rollers rotates (rotates) around its own central axis based on the relative rotation of the upper and lower plates, and the central axis of the cage is rotated by the rotation of the cage. Rotate (revolve) around. Further, the large-diameter side end face of each tapered roller (see the large-diameter side end face 12 of each tapered roller 4, 4 described in FIG. 12) has a diameter larger than the radial outer end edges of the upper and lower boards. Projects outward in the direction. In this state, the end surface on the large diameter side of each tapered roller is pressed against the grindstone that is rotationally driven, and one axial end surface of each tapered roller is formed into a spherical shape. Each tapered roller after processing is discharged from a discharge chute disposed at one position in the circumferential direction on the outer side in the radial direction of the cage.

  In the case of the grinding apparatus described in Patent Document 2 having the above-described configuration, in order to improve the processing efficiency, when the rotational speed of the cage is increased (the rotational speed is increased), it is processed by a grindstone. Each of the tapered rollers after the discharge cannot be smoothly discharged from the discharge chute, and the processing efficiency may be reduced.

Japanese Patent Laid-Open No. 60-6335

  In view of the circumstances as described above, the present invention achieves a structure capable of reducing the size of the apparatus and efficiently discharging the tapered rollers after processing.

The tapered surface end grinding apparatus of the present invention includes a main shaft, a first clamping member, a second clamping member, a cage, a grindstone, and a fluid supply means.
Of these, the first clamping member is formed in an annular shape, has a first rolling surface over the entire circumference at the radially outer end of one axial side surface thereof, and is concentric with the main shaft and rotates with respect to the main shaft. It is provided in a possible state.
The second clamping member is formed in an annular shape, has a second rolling surface over the entire circumference at a radially outer end of a side surface facing one axial side surface of the first clamping member, and is concentric with the main shaft. The main shaft is provided in a state capable of rotating with respect to the main shaft.
The retainer is formed in an annular shape, and has a plurality of axially opposite ends and a radially outer end that are open at a plurality of locations in the circumferential direction of the radially outer end, and has pockets for holding the tapered rollers in a freely rollable manner. ing. Such a cage is provided in an internal space formed in an intermediate portion between the first clamping member and the second clamping member in the axial direction, concentrically with the main shaft and capable of rotating with respect to the main shaft. It has been. This internal space does not need to be a closed space.
The said grindstone is provided in the radial direction outer side of the said holder | retainer in the state which can rotate centering | focusing on its own central axis.
The fluid supply means includes at least the grindstone among the tapered rollers held in the pockets via a fluid supply passage formed in the first clamping member or a member coupled to the first clamping member. It is for supplying a fluid to the end surface on the small diameter side of the tapered roller after being processed.

The tapered surface end grinding apparatus of the present invention having the above-described configuration includes the pockets between the first rolling surface of the first clamping member and the second rolling surface of the second clamping member. In the state where each tapered roller held in the axial direction is pressed in the axial direction, each tapered roller rotates around its central axis and revolves around the central axis of the main shaft, The large diameter side end surfaces of these tapered rollers are processed into a spherical shape by pressing the large diameter side end surfaces of the tapered rollers against the rotated grindstone.
And each said tapered roller after a process is discharged | emitted radially outward from the opening part of the radial direction outer end side of each said pocket in a predetermined position.

In a first aspect of the present invention, the fluid supply means is secured to the portion that does not rotate, you configured to include an upstream side supply member for supplying the fluid to the upstream side opening of the fluid supply passage.
In the case of adopting such a configuration, for example, the position where the upstream supply member supplies the fluid to the fluid supply passage is positioned forward of the grindstone with respect to the rotation direction of the cage, and In addition, it is possible to set the rotational direction rearward from the position where each of the tapered rollers is discharged. The upstream supply member is installed at a position where the fluid is supplied to the fluid supply passage. The tapered rollers after the fluid supplied from the upstream supply member is processed by a grindstone are the pockets. From the position where the taper is discharged radially outward, the position is set as appropriate so as to contact the end face on the small diameter side of each of these tapered rollers.
When the first aspect of the present invention as described above is implemented, the position where the upstream supply member supplies the fluid to the upstream opening of the fluid supply passage is additionally adjusted during processing. It is possible to employ a configuration including a fluid supply position adjusting means that can do this.

In a second aspect of the present invention, the member in which the fluid supply passage is formed, that make up the said first clamping member and another member which is formed in the tubular member. In this case, the tubular member, the inner diameter side of the first clamping member, shall be the ones that have been bound and fixed in a rotatable state integrally with the first clamping member.
In carrying out the second aspect of the present invention as described above, the outer diameter of the cylindrical member is additionally provided at the end of the cylindrical member on the side disposed in the internal space. It is possible to adopt a configuration in which an annular guide plate having a larger outer diameter is provided integrally or integrally with the cylindrical member. In this case, the fluid flowing out from the downstream opening of the fluid supply passage flows through the side surface on the cylindrical member side of the side surface of the guide plate, and is supplied to the end surface on the small diameter side of each tapered roller. Configure as follows.

In the case of carrying out the present invention as described above, the fluid may additionally be the same as the grinding fluid supplied to the grinding portion of the grindstone and each tapered roller.
In addition, the 1st aspect and 2nd aspect of this invention can also be implemented in combination.

According to the present invention having the configuration as described above, it is possible to realize a structure capable of efficiently discharging the tapered rollers after processing.
That is, in the case of the present invention, at least the grindstone of the tapered rollers held in each pocket of the cage through the fluid supply passage formed in the first clamping member or the member coupled to the first clamping member. Provided with a fluid supply means for supplying fluid to the end surface on the small diameter side of the tapered roller after being processed. By supplying the fluid in this way, a force (fluid pressure) directed radially outward can be applied to each tapered roller. As a result, each tapered roller can be smoothly discharged from each pocket.

Sectional drawing which shows the end surface grinding apparatus of the tapered roller of the 1st example of embodiment of this invention. The top view which shows only the holder | retainer side ring part of the holder | retainer which comprises the end surface grinding apparatus of a tapered roller. AA sectional drawing of FIG. The perspective view of the supply ring which comprises a fluid supply means. The top view seen from the upper part of FIG. BB sectional drawing of FIG. CC sectional drawing of FIG. The fragmentary sectional view which looked at the supply box which comprises a fluid supply means from the upper direction of FIG. DD sectional drawing of FIG. The figure seen from the right side of FIG. The schematic diagram of the end surface grinding apparatus of a tapered roller which shows the state seen from the upper direction of FIG. Sectional drawing which shows an example of the tapered roller bearing provided with the tapered roller used as the process target of this invention.

[First example of embodiment]
A first example of the embodiment of the present invention will be described with reference to FIGS. The end roller grinding device 14 for the tapered roller of this example is formed into a spherical shape on the large diameter side end surface 12 of each tapered roller 4, 4 constituting the tapered roller bearing 1 (see FIG. 12). The grinding process is performed. The tapered surface end grinding device 14 of this example includes a main shaft 15, a lower plate 16, an upper plate 17, a cage 18, a fluid supply unit 19, a roller supply unit 20, a grindstone 21, A roller discharge means 22 and a guide member 23 are provided.

  Of these, the main shaft 15 is a bowl-shaped member. In the case of this example, the other axial side of the main shaft 15 (the lower side in FIG. 1. With respect to the end surface grinding device for the tapered roller, the axial direction, the radial direction, and the circumferential direction refer to the axial direction of the main shaft unless otherwise specified. Further, the vertical direction refers to the vertical direction with respect to Fig. 1. The same applies to the entire specification and claims.) In order to pull the main shaft 15 downward, for example, a tension composed of an air cylinder or the like. Means 24 are provided.

The lower plate 16 is a member corresponding to the second clamping member in the claims, and includes a lower plate side disk portion 25 and a lower plate side shaft portion 26.
Of these, the lower disk side disk part 25 is a cylindrical surface whose outer peripheral surface is constant over the entire length in the axial direction. Further, a lower board side flange 27 is formed at the radially outer end of one end surface in the axial direction of the lower board side disk part 25 so as to protrude in one axial direction (upward in FIG. 1) over the entire circumference. ing. On one end surface in the axial direction of the lower board side flange 27, a lower board side rolling surface 28 is formed which is inclined to the other side in the axial direction as it goes radially outward over the entire circumference. The lower board side rolling surface 28 corresponds to the second rolling surface described in the claims. Further, the inclination angle of the lower plate side rolling surface 28 with respect to a virtual plane orthogonal to the central axis of the lower plate side shaft portion 26 (main shaft 15) is the outer peripheral surface of each of the tapered rollers 4 and 4 to be processed. The absolute value of the inclination angle with respect to the central axis of each of these tapered rollers 4 and 4 in the shape of the genera
In addition, an inward flange 29 is formed on the other end in the axial direction (the lower end in FIG. 1) of the inner peripheral surface of the lower disk side disk portion 25 so as to protrude radially inward over the entire circumference. ing.

  The lower plate side shaft portion 26 has a cylindrical shape, and is provided integrally with the lower plate side disc portion 25 in a state protruding from the other axial end surface of the inward flange portion 29 to the other axial direction. The outer peripheral surface of the lower board side shaft portion 26 is a cylindrical surface having a constant outer diameter over the entire axial length. Further, the inner peripheral surface of the lower plate side shaft portion 26 is a cylindrical surface having a constant inner diameter over the entire length in the axial direction, and the inner diameter is determined on the cage side of the main shaft 15 and a cage 18 described later. It is larger than the outer diameter of the shaft portion 41.

The lower plate 16 having the above-described configuration is a fixed cylinder that constitutes the housing 30 in a state where the other half portion (lower half portion) of the main shaft 15 is inserted inside the lower plate side shaft portion 26. It is supported inside the part 31 via a rolling bearing 32. In this state, the lower plate 16 is supported concentrically with the main shaft 15 so as to be rotatable with respect to the main shaft 15. In the case of this example, the lower board 16 is rotationally driven by a motor 49 as a drive source during processing. The rotation direction of the lower board 16 is opposite to the direction in which a cage 18 described later is rotationally driven. However, the rotation direction of the lower board 16 and the rotation direction of the cage 18 can be the same direction. The rotation direction of the lower plate 16 and the rotation direction of the retainer 18 are for rotating the motor 49 for driving the lower plate 16 and the retainer 18 provided separately from the motor 49. This can be determined as appropriate by setting with the motor 49a.
In the case of this example, the motor 49 for rotationally driving the lower board 16 and the motor 49a for rotationally driving the cage 18 are constituted by different motors, but by a common motor, The lower plate 16 and the cage 18 may be configured to be rotationally driven. In this case, it is possible to provide a difference in the rotational speeds of the lower panel 16 and the retainer 18 or adjust the rotational directions of each other through a reduction gear or the like.

The upper board 17 corresponds to the first clamping member described in the claims, and includes an annular part 33, a conical cylinder part 34, and an upper board side flange part 35.
The inner peripheral surface of the annular portion 33 of this, a small diameter cylindrical surface portion 36 provided on one side half portion axially provided on the other axial half portion, larger inner diameter than the small diameter cylindrical surface portion 36 a large-diameter cylindrical surface portion 37 having, consists stepped portion 38. continuous and large-diameter cylindrical surface portion 37 of the small diameter cylindrical surface portion 36 Toko. It should be noted that screw holes (not shown) are formed at a plurality of locations in the circumferential direction of the step portion 38 (six locations in this example).

Further, the conical cylinder portion 34 is provided in a state of being inclined from the radially outer end edge of the annular ring portion 33 to the other axial direction as it goes radially outward.
Further, the upper board side flange 35 is provided in a state extending from the other axial end face of the conical cylinder part 34 to the other axial end along the entire circumference. On the other end surface in the axial direction of the upper panel side flange 35, an upper panel side rolling surface 39 that is inclined in one axial direction as it goes outward in the radial direction is formed over the entire circumference. The upper board side rolling surface 39 corresponds to the first rolling surface described in the claims. In addition, the inclination angle of the upper plate side rolling surface 39 with respect to a virtual plane orthogonal to the central axis of the upper plate 17 (main shaft 15) is the generatrix shape of the outer peripheral surface of each of the tapered rollers 4, 4. This coincides with the absolute value of the inclination angle with respect to the central axis of the tapered rollers 4 and 4.

Upper plate 17 having the above such configuration, through the supply ring 50 and the rolling bearing 59 constitutes a fluid supply means 19 to be described later, concentrically with the spindle 15, in a state capable of rotating relative to the spindle 15 It is supported. In this state, the upper board side rolling surface 39 of the upper board 17 and the lower board side rolling surface 28 of the lower board 16 face each other in a state of being separated in the axial direction. In the case of this example, the upper board 17 is provided in a state capable of rotating with respect to the main shaft 15, but is not rotationally driven by a drive source such as a motor. Further, as the rolling bearing 59, it is preferable to employ a rolling bearing (for example, a radial tapered roller bearing or the like) that can support a thrust load (a vertical load in FIG. 1).
And the upper plate 17, will be described later coupling structure of the said supply ring 50.

The cage 18 includes a cage-side annular ring portion 40 and a cage-side shaft portion 41.
Among these, the cage-side annular ring portion 40 is formed with through holes 42 and 42 penetrating in the axial direction at a plurality of circumferential locations (six locations in this example) near the radially inner end. Each of the through holes 42 and 42 can be a screw hole or a simple through hole. In addition, a plurality of column portions 43 and 43 are provided at a plurality of locations in the circumferential direction (30 locations in this example) on the radially outer end surface of the cage-side annular portion 40 so as to protrude radially outward. It has been. Then, the tapered rollers 4 and 4 are respectively rolled at portions surrounded by three sides by the respective column portions 43 and 43 adjacent to each other in the circumferential direction and the radially outer end surface of the cage side annular portion 40. Pockets 44 and 44 are provided for holding freely. In the state where the respective tapered rollers 4, 4 are held in the respective pockets 44, 44, the large-diameter side end surfaces 12 of the respective tapered rollers 4, 4 are radially outer end surfaces of the respective column portions 43, 43. Projecting slightly outward in the radial direction. Of the pair of pillar portions 43, 43 constituting each of the pockets 44, 44, each pillar portion 43 on the rear side with respect to the rotation direction of the retainer 18 (clockwise in FIG. 2) during processing. 43 are provided with shoes 45, 45 made of super steel alloy for guiding the sliding of the tapered rollers 4, 4 on the side surface in the circumferential direction which is the front side in the rotational direction. Accordingly, at the time of processing, the tapered rollers 4 and 4 are revolved so as to be pushed forward with respect to the rotation direction of the cage 18 by the shoes 45 and 45 (rotate around the central axis of the main shaft 15). ).

  The cage side shaft portion 41 is a cylindrical member provided separately from the cage side annular portion 40. The outer peripheral surface of the cage side shaft portion 41 is a cylindrical surface having a constant outer diameter over the entire length in the axial direction, and the outer diameter size is slightly smaller than the inner diameter size of the lower plate side shaft portion 26. The inner peripheral surface of the cage side shaft portion 41 is a cylindrical surface having a constant outer diameter over its entire length, and the inner diameter is larger than the outer diameter of the main shaft 15. Such a cage-side shaft portion 41 has one end surface in the axial direction at the radially inner end of the other side surface in the axial direction of the cage-side annular portion 40 and each through hole of the cage-side annular portion 40. The bolts 42 and 42 are connected and fixed by bolts (not shown).

The cage-side annular ring portion 40 of the cage 18 having the above-described configuration is formed between an upper end surface (an axial end surface) of the lower plate 16 and a lower end surface (an axial lower end surface) of the upper plate 17. Arranged in an internal space 46 formed therebetween. In this state, the pockets 44 of the retainer 18 are located between the upper board side rolling surface 39 of the upper board 17 and the lower board side rolling surface 28 of the lower board 16. ing.
Further, the cage side shaft portion 41 of the cage 18 is inserted between the outer peripheral surface of the main shaft 15 and the inner peripheral surface of the lower plate side shaft portion 26 of the lower plate 16. In this state, a ball bush 47 that is movable in the axial direction is provided between the outer peripheral surface of the main shaft 15 and the one axial half of the inner peripheral surface of the cage side shaft portion 41. . In place of the ball bush 47, a sleeve-like slide bearing can be used. On the other hand, a rolling bearing 48 is provided between a portion near the one axial end of the outer peripheral surface of the cage side shaft portion 41 and one axial half of the inner peripheral surface of the lower plate 16. In this way, the cage 18 (the cage-side shaft portion 41) is supported in a state in which it can rotate with respect to the main shaft 15 and the lower plate 16. The holder 18 is rotationally driven in a direction opposite to that of the lower board 16 and at a different rotational speed by a motor 49a provided separately from the motor 49 that rotationally drives the lower board 16 during processing. However, as described above, by adjusting the settings of the motor 49 and the motor 49a, the rotation directions of the lower board 16 and the retainer 18 can be made the same direction.

  The fluid supply means 19 supplies (bumps) coolant to the small-diameter side end surfaces 10 of the tapered rollers 4 and 4 that are guided by the cage 18 and rotate (revolve and rotate). The tapered rollers 4 and 4 are for urging the taper rollers 4 and 4 to come out radially outward from the pockets 44 and 44 of the cage 18. In the case of this example, the same coolant as the processing oil (grinding fluid) supplied to the grinding portion by the grindstone 21 is used as the coolant. However, the coolant may be different from the processing oil supplied to the grinding part.

Such a fluid supply means 19 includes a supply ring 50, a guide plate 51, and a supply box 52.
Among these, the supply ring 50 is a columnar member, and an inward flange portion 53 that protrudes radially inward over the entire circumference is formed at one axial end portion of the inner peripheral surface thereof. Further, an outward flange portion 54 is formed at the other end portion in the axial direction of the outer peripheral surface of the supply ring 50 so as to protrude radially outward over the entire circumference. Through holes 55 and 55 are formed at a plurality of circumferentially equidistantly spaced locations (six locations in this example) of the outward flange portion 54 so as to penetrate the outward flange portion 54 in the axial direction. The through holes 55 and 55 can be screw holes or simple through holes.

  In addition, the other end in the axial direction opens to the other end surface in the axial direction of the supply ring 50 at a plurality of circumferential positions (24 locations in this example) of the other end surface in the axial direction of the supply ring 50, and The axial supply passages 56 and 56 are formed in a state in which one axial end portion is positioned at the axial intermediate portion of the supply ring 50. Further, in the supply ring 50, both ends in the radial direction are connected to the axial supply passages 56, 56 and the supply in the radial outer portion of the axial end portions of the axial supply passages 56, 56. Radial supply passages 57, 57 that are open to the outer peripheral surface of the intermediate portion in the axial direction of the ring 50 are formed. In this way, each of the axial supply passages 56 and 56 and each of the radial supply passages 57 and 57 includes a space existing on the other axial end side of the other axial end surface of the supply ring 50, and this supply. The space which exists in the outer-diameter side of the axial direction intermediate part outer peripheral surface of the use ring 50 is connected. In this example, the axial supply passages 56 and 56 and the radial supply passages 57 and 57 correspond to the fluid supply passages described in the claims.

  In the case of this example, a friction brake 58 is provided at one position in the circumferential direction at one axial end portion of the outer peripheral surface of the supply ring 50. Although the detailed structure of the friction brake 58 is omitted, for example, a first friction member provided integrally with the supply ring 50 (or separately provided and coupled) and a fixed portion are provided. It can comprise by carrying out friction engagement with the fixed 2nd friction member. Such a friction brake 58 applies the brakes to the upper board 17 and adjusts the rotational speed of the upper board 17 with respect to the retainer 18 at the time of processing, so that the tapered rollers 4 and 4 are connected to the pockets. It is for moving (revolving) so as to press against the shoes 45, 45 provided on 44, 44. In this manner, the posture of the tapered rollers 4 and 4 in the pockets 44 and 44 can be maintained. Such a friction brake 58 is configured to always operate while the supply ring 50 is rotating. The friction brake can be provided directly on the upper board. That is, the friction brake can be provided on the upper board or a member that rotates integrally with the upper board (in this example, the supply ring 50).

  The supply ring 50 having the above-described configuration is formed with respect to the upper plate 17, one axial side surface of the outward flange 54, and a step portion 38 formed on the inner peripheral surface of the upper plate 17. The bolts (not shown) inserted through the through-holes 55 and 55 of the outward flange 54 are coupled and fixed by screwing into the screw holes of the stepped portion 38. In this state, the supply ring 50 is supported on the outer peripheral surface near one end in the axial direction of the main shaft 15 through a rolling bearing 59 so as to be rotatable with respect to the main shaft 15.

The guide board 51 includes a cylindrical portion 60 and an annular portion 61 having a larger outer diameter than the cylindrical portion 60 and integrally provided at the other axial end of the cylindrical portion 60. In such a guide plate 51, one end of the cylindrical portion 60 in the axial direction is opened at the other end in the axial direction of the axial supply passages 56 and 56 of the other end surface in the axial direction of the supply ring 50. For example, a bolt or welding is used to couple and fix to the radially inner portion of the position. In the case of this example, the guide plate 51 includes the other end surface in the axial direction of the supply ring 50 in the internal space 46, and one side surface in the axial direction of the cage-side annular portion 40 constituting the cage 18. It is arrange | positioned in the state spaced apart to the axial direction one side surface of this holder | retainer side ring part 40 in the intermediate part. The guide board can be formed integrally with the supply ring.
In addition, a groove, a bead or the like for rectifying the coolant flowing on the one side surface in the axial direction can be formed on one side surface in the axial direction of the guide board 51. The shape of such a groove, a bead or the like can be, for example, a radiation straight line or a radiation curve.

The supply box 52 corresponds to the upstream supply member described in the claims, and includes a base 62 and a supply port 63.
Of these, the base 62 is a rectangular parallelepiped member, and has a screw hole 64 in one end surface (the front side end surface in FIG. 8, the upper end surface in FIG. 9) in the height direction (front and back direction in FIG. Is formed. In addition, the base 62 is arranged in the vertical direction (FIG. 8, FIG. 8, in the horizontal direction (vertical direction in FIG. 8, vertical direction in FIG. 9, front and back direction in FIG. 10, left and right direction in FIG. 10)). 9 in the left-right direction 9 and the front-back direction in FIG. 10 is formed. In the assembled state shown in FIG. 1, the base portion 62 is assembled in a state where the height direction of the base portion 62 coincides with the axial direction of the main shaft 15.

  The supply port 63 is a box-shaped member that is open at both ends in the vertical direction (the left-right direction in FIGS. 8 and 9 and the front and back direction in FIG. 10). The one end surface in the vertical direction of such a supply port 63 has substantially the same shape as the curvature of the outer peripheral surface of the supply ring 50 as viewed from the height direction (front and back direction in FIG. 8, vertical direction in FIGS. 9 and 10). It is formed in a circular arc shape having a curvature. In such a supply port 63, the other end surface in the vertical direction is coupled and fixed to a portion near the other end in the height direction of the other side surface in the vertical direction by welding or the like. In this state, between the one wall portion 66a in the height direction of the supply port 63 and the other wall portion 66b in the same height direction, and in the lateral direction (vertical direction in FIG. 8, front and back direction in FIG. 9, With respect to the horizontal direction in FIG. 10, the other end in the vertical direction of the supply through-hole 65 of the base 62 is formed at the center of the one wall 66 c in the width direction and the other wall 66 d in the horizontal direction of the supply port 63. The part is located.

  The supply box 52 having the above-described configuration has the base portion 62 in a state in which one end surface in the vertical direction of the supply port 63 is in contact with the axial intermediate portion of the outer peripheral surface of the supply ring 50 without any gap. The one end surface in the height direction is coupled and fixed to a fixing portion 67 such as a housing. Specifically, a bolt (not shown) inserted through a through hole formed in the fixing portion 67 is fixed by screwing into a screw hole 64 formed in one end surface of the base portion 62 in the height direction. Yes. In the state of being coupled and fixed in this manner, the opening on one end side in the longitudinal direction of the supply port 63 is connected to one wall 66a in the height direction of the supply port 63 with respect to the axial direction of the supply ring 50. The radial supply passages 57, 57 formed in the supply ring 50 are located between the other wall portion 66b in the vertical direction. Accordingly, the coolant present in the supply port 63 is in contact with the opening on one end side in the longitudinal direction of the supply port 63 and the radial supply passages 57 and 57 aligned with respect to the circumferential direction of the supply ring 50. Thus, the fluid can be supplied.

In the case of this example, the supply box 52 is disposed about 45 degrees behind the roller discharge means 22 described later with respect to the rotation direction of the retainer 18 (the direction indicated by the arrow α in FIG. 11). However, the position where the supply box 52 is arranged is not limited to the case shown in the figure. Specifically, the position where the supply box 52 is disposed is that the coolant supplied from the supply box 52 is arranged so that the radial supply passages 57 and 57 of the supply ring 50 and the axial supply passages 56 are arranged. , 56, and further flows on one side surface in the axial direction of the guide plate 51 and is supplied to the small-diameter side end face 10 of the tapered rollers 4 and 4 at a position to be described later with respect to the circumferential direction. The position is adjusted so that the discharging means 22 is provided. In the case of this example, supply position adjusting means (not shown) for adjusting the circumferential position of the supply box 52 is provided during processing. Such supply position adjusting means is configured, for example, by supporting the supply box 52 with respect to the fixing portion 67 so that the fixing position in the circumferential direction can be changed. Further, when the rotational speed of the cage 18 is high, the supply box 52 is preferably arranged away from the roller discharging means 22 in the circumferential direction. As described above, the installation position of the supply box 52 is appropriately determined in consideration of not only the rotational speed of the cage 18 but also the properties of the fluid to be used.

  The roller supply means 20 is provided at one position in the circumferential direction that is radially outward from the radially outer end face of the cage 18 (column portions 43, 43). Such a roller supply means 20 includes a tapered roller 4 before processing (a large-diameter end face is flat) from the outside in the radial direction in each pocket 44, 44 of the cage 18 that rotates during processing. 4 is supplied (inserted) one by one.

  The grindstone 21 is positioned at one position in the circumferential direction that is radially outward from the radially outer end face of the cage 18 (column portions 43 and 43), and the rotational direction of the cage 18 (indicated by an arrow α in FIG. 11). With respect to the direction shown), the roller supply means 20 is disposed in front (downstream side). Such a grindstone 21 has a so-called drum shape in which the generatrix shape of the outer peripheral surface is a partially concave arc shape (a partial arc having a diameter that decreases from the both axial ends toward the center in the axial direction). Such a grindstone 21 has its outer peripheral surface close to the radially outer end surface of the retainer 18 in a state where its own central axis exists on a virtual plane orthogonal to the central axis of the main shaft 15. In addition, the curvature of the large-diameter side end face 12 of each of the tapered rollers 4 and 4 after processing is obtained by changing the curvature of the bus bar shape of the outer peripheral surface of the grindstone 21 (the curvature of the bus bar shape is changed to another grindstone). Can be adjusted. Such a grindstone 21 is rotationally driven by a drive source (not shown) around its own central axis during processing.

  The roller discharge means 22 is positioned at one position in the circumferential direction that is radially outward from the radially outer end face of the cage 18 (columns 43 and 43), and the rotational direction of the cage 18 (arrow in FIG. 11). (the direction indicated by α) is provided in front of the grindstone 21 and in a position behind the roller supply means 20. In other words, the roller discharging means 22 includes the tapered rollers 4 and 4 after processing (the large-diameter end surface 12 is processed into a spherical shape) guided by the cage 18 in the circumferential direction. It is provided at a passing position. Such roller discharging means 22 is for receiving the tapered rollers 4 and 4 discharged radially outward from the pockets 44 and 44 of the cage 18.

The guide member 23 prevents the tapered rollers 4 and 4 revolved while being guided by the cage 18 from coming out of the pockets 44 and 44 of the cage 18 radially outward during the revolution. For this purpose, it comprises a first guide member 68 and a second guide member 69.
Among these, the first guide member 68 has a first guide curved surface portion 70 having a partial cylindrical surface.
The first guide curved surface portion 70 has the first guide curved surface portion 70 opposed to the radially outer end surface of the cage 18 (column portions 43, 43), and each pocket 44, Each of the tapered rollers 4 and 4 held at 44 has a radius of curvature that is large enough to be disposed with or without a small gap from the large-diameter end face 12 of the tapered roller 4 or 4. In the first guide member 68 having such a configuration, one end in the circumferential direction (the end on the front side in the clockwise direction in FIG. 11) is the other end in the circumferential direction on the grindstone 21 (the rear side in the clockwise direction in FIG. 11). The first guide curved surface portion 70 and the cage 18 (columns) at a position adjacent to one end in the circumferential direction of the roller supply means 20. It is provided in a state of being opposed to the radially outer end face of the portions 43, 43). Such a first guide member 68 is fixed to a fixed portion such as a housing.

Similarly to the first guide member 68 , the second guide member 69 has a second guide curved surface portion 71 having a partial cylindrical surface.
The second guide curved surface portion 71 includes the pockets 44 of the cage 18 in a state where the second guide curved surface portion 71 is opposed to the radially outer end surface of the cage 18 (column portions 43, 43). Each of the tapered rollers 4 and 4 held at 44 has a radius of curvature that is large enough to be disposed with or without a small gap from the large-diameter end face 12 of the tapered roller 4 or 4. In the second guide member 69 having such a configuration, one end portion in the circumferential direction (the end portion in the clockwise direction in FIG. 11) is the other end portion in the circumferential direction in the roller discharge means 22 (the clockwise direction in FIG. 11). The second guide curved surface portion 71 is moved to the retainer 18 (column) at a position adjacent to the rear end) and the other end in the circumferential direction adjacent to one end in the circumferential direction of the grindstone 21. It is provided in a state of being opposed to the radially outer end face of the portions 43, 43). Such a second guide member 69 is fixed to a fixed part such as a housing.

Next, a procedure for grinding the large-diameter side end surfaces of the tapered rollers 4 and 4 using the tapered roller end surface grinding device 14 of the present example having the above-described configuration will be described.
First, in the state shown in FIG. 1, the grindstone 21 is rotationally driven by a drive source such as a motor. Further, the retainer 18 (the retainer side shaft portion 41) is rotationally driven in the direction indicated by the arrow α in FIG. 11 by the motor 49a. Further, the lower board 16 is rotated by the motor 49 in the direction opposite to the cage 18. However, as described above, by adjusting the settings of the motor 49 and the motor 49a, the rotation directions of the lower board 16 and the retainer 18 can be made the same. In the following description, the case where the rotation direction of the lower board 16 and the rotation direction of the cage 18 are reversed will be described.

  Further, coolant in an oil tank (not shown) is sucked up by a pump and supplied to a supply box 52 constituting the fluid supply means 19. The coolant supplied to the supply box 52 in this way is the supply through hole 65 of the supply box 52 → the supply port 63 of the supply box 52 → the supply ring 63 aligned with the supply port 63 in the circumferential direction. 50 radial supply passages 57, 57 → are supplied to the internal space 46 through forward paths of axial supply passages 56, 56 continuous with the radial supply passages 57, 57. In this way, the coolant supplied to the internal space 46 flows on one side surface in the axial direction of the guide plate 51 and falls within a predetermined range in the circumferential direction of the pockets 44, 44 of the cage 18. It is supplied to the radially inner end portions of the respective pockets 44, 44 (in the case where the tapered rollers 4, 4 are held, the inner diameter end surfaces of the tapered rollers 4, 4). In the case of this example, the predetermined range is a position aligned with the roller discharge means 22 in the circumferential direction, or 0 to 120 degrees from the roller discharge means 22 in the rotation direction of the cage 18 ( Preferably, it means the range up to 30 degrees).

  Further, in the above-described state, of the pockets 44, 44 of the cage 18 that is rotationally driven, the pocket 44 at the position aligned with the roller supply means 20 in the circumferential direction is transferred from the roller supply means 20 to the pocket 44. Tapered roller 4 is supplied. The supply of the tapered rollers 4 and 4 is performed one by one for the pockets 44 and 44 of the cage 18.

In this way, after the roller supply means 20 starts supplying the tapered rollers 4 and 4 to the pockets 44 and 44 of the retainer 18, the main shaft 15 is moved in the other axial direction by the tension means 24 (see FIG. 1). Then, the rolling bearing 59, said through the supply ring 50, the upper plate 17 (toward the lower plate 16) in the other axial is tensile. The tapered rollers 4 and 4 are sandwiched (pressurized) between the upper board side rolling surface 39 of the upper board 17 and the lower board side rolling surface 28 of the lower board 16. . In this state, each of the tapered rollers 4 and 4 rotates (revolves) around the central axis of the cage 18 (main shaft 15) as the cage 18 and the lower plate 16 rotate, Rotates (rotates) around the central axis. Then, based on the frictional force generated at the contact portion between the outer peripheral surface of each tapered roller 4, 4 and the upper plate side rolling surface 39 of the upper plate 17, the upper plate 17 is opposite to the lower plate 16. The rotation starts (follows) in the same direction as the cage 18. As a result, between the upper board 17 and the lower board 16, the tapered rollers 4 and 4 rotate (rotate) around their own central axes. When the lower board 16 is rotationally driven in the same direction as the cage 18 and at a higher speed than the rotational speed of the cage 18, the upper board 17 is connected to the lower board 16 and the cage. Rotate in the opposite direction to 18. Further, depending on the relationship between the rotational speed of the lower board 16 and the rotational speed of the cage 18, the upper board 17 may rotate at a higher speed than the rotational speed of the lower board 16.

In the state as described above, the tapered rollers 4, 4 supplied from the roller supply means 20 to the pockets 44, 44 have the large-diameter end surface 12 on the first guide curved surface of the first guide member 68. While being guided by the unit 70, the robot moves in the direction indicated by the arrow α in FIG. In the case of this example, the cage 18 and the lower board 16 are rotationally driven in the opposite directions. On the other hand, the cage 18 and the upper board 17 rotate in the same direction, and the braking force by the friction brake 58 as described above acts on the upper board 17 . For this reason, when processing, the tapered rollers 4 and 4 held in the pockets 44 and 44 are connected to the retainer 18 of the column portions 43 and 43 constituting the pockets 44 and 44, respectively. It moves in a state of being pressed against the shoes 45, 45 provided on the pillars 43, 43 on the rear side in the rotation direction. In the case of this example, when it is assumed that the tapered rollers 4 and 4 roll on a flat surface so as not to slip, the radius of curvature of the track drawn by the large-diameter end face 12 of the tapered rollers 4 and 4 is as follows. Is larger than the curvature radius of the generatrix shape of the outer peripheral surface of the grindstone 21 and the curvature radii of the first and second guide curved surface portions 70 and 71 of the first and second guide members 68 and 69. It is set. For this reason, when the tapered rollers 4 and 4 are guided by the cage 18 and revolve, they are radially outward from the openings on the radially outer end sides of the pockets 44 and 44 based on their own rotation. Try to stick out. Accordingly, the tapered rollers 4 and 4 revolve so that the large-diameter side end surface 12 is pressed against the first and second guide curved surface portions 70 and 71.

When each of the tapered rollers 4, 4 revolves and proceeds to a position that aligns with the grindstone 21 in the circumferential direction, the large-diameter side end face 12 of each of the tapered rollers 4, 4 is pressed against the grindstone 21 to form a spherical surface. Processed into a shape.
The tapered rollers 4 and 4 after the large-diameter end surface 12 is processed by the grindstone 21 are guided by the second guide curved surface portion 71 of the second guide member 69 through the large-diameter end surface 12. However, the process proceeds to a position aligned with the roller discharge means 22 in the circumferential direction. In this state, the coolant supplied to the internal space 46 by the fluid supply means 19 is vigorously supplied (collised) to the small diameter side end face 10 of each of the tapered rollers 4 and 4. Therefore, a force directed radially outward from the coolant is applied to the tapered rollers 4 and 4. As a result, these tapered rollers 4, 4 come out radially outward from the radially outer end side openings of the respective pockets 44, 44 of the cage 18 and are sent to the roller discharging means 22.
When the cage 18 further rotates from this state, the tapered rollers 4, 4 from the roller supply means 20 are inserted into the pockets 44, 44 of the cage 18 that do not hold the tapered rollers 4, 4. Is supplied.

According to this example having the configuration as described above, it is possible to realize a structure capable of efficiently discharging the tapered rollers 4 and 4 after processing.
That is, in the case of this example, when each of the tapered rollers 4, 4 after being processed by the grindstone 21 by the fluid supply means 19 is aligned with the roller discharge means 22 in the circumferential direction, each of these tapered rollers. The coolant is supplied to the small diameter side end faces 4 and 4. Therefore, a radial outward force (coolant pressure) is applied to each of these tapered rollers 4 and 4 from this coolant. As a result, the tapered rollers 4 and 4 are smoothly discharged from the pockets 44 and 44.

Further, the tensioning means 24 for pulling the upper plate 17 downward, it is provided in the other axial this upper plate 17 (downward in FIG. 1). For this reason, the space on one axial side (the upper side in FIG. 1) of the upper board 17 can be effectively utilized. In this example, the space is used as a space for arranging the fluid supply means 19.

[Second Example of Embodiment]
A second example of the embodiment of the present invention will be described with reference to FIGS. In the case of the structure of the first example of the above-described embodiment, a configuration in which the lower plate 16 is rotationally driven by the motor 49 is adopted. However, in the case of the tapered surface end grinding apparatus of this example, the lower plate 16 is rotationally driven. The structure which does not do is adopted. That is, in this example, among the lower board 16, the upper board 17, and the cage 18, only the cage 18 is driven by the motor 49.
Also in this example, a friction brake 58 is provided at one position in the circumferential direction at one axial end portion of the outer peripheral surface of the supply ring 50. If the upper board or a member that rotates integrally with the upper board is not provided with a friction brake, a configuration in which the friction brake is provided on the lower board or a member that rotates integrally with the lower board should be adopted. You can also. Other configurations are the same as those of the first example of the embodiment described above.

A procedure for grinding the large-diameter side end surfaces of the tapered rollers 4 and 4 using the tapered surface end grinding apparatus of the present example having the above-described configuration will be described.
First, in the state shown in FIG. 1, the grindstone 21 is rotationally driven by a drive source such as a motor. Further, the retainer 18 (the retainer side shaft portion 41) is rotationally driven by the motor 49 in the direction indicated by the arrow α in FIG.

Similarly to the first example of the above-described embodiment, after the roller supply means 20 starts supplying the tapered rollers 4 and 4 to the pockets 44 and 44 of the retainer 18, the main shaft is pulled by the tension means 24. 15 is pulled in the other axial direction (downward in FIG. 1). Then, the rolling bearing 59, through the supply ring 50, the upper plate 17 (toward the lower plate 16) in the other axial is tensile. The tapered rollers 4 and 4 are sandwiched (pressurized) between the upper board side rolling surface 39 of the upper board 17 and the lower board side rolling surface 28 of the lower board 16. . In this state, the tapered rollers 4 and 4 rotate (revolve) around the central axis of the cage 18 (main shaft 15) as the cage 18 rotates. Then, the frictional force generated at the contact portion between the outer peripheral surface of each tapered roller 4, 4 and the upper plate side rolling surface 39 of the upper plate 17, and the outer peripheral surface of each tapered roller 4, 4 and the lower plate The upper board 17 and the lower board 16 start to rotate in the same direction as the cage 18 based on the frictional force generated at the contact portion with the lower board-side rolling surface 28 of 16. At this time, the upper board 17 is always loaded with a frictional resistance against the rotation by the friction brake 58 provided on the supply ring 50 that rotates in synchronization with the upper board 17 during the rotation. ing. For this reason, the rotational speed of the upper board 17 is slower than the rotational speed of the lower board 16. As a result, on the basis of the difference between the rotational speed of the upper board 17 and the rotational speed of the lower board 16, the tapered rollers 4 and 4 rotate (rotate) around their central axes. Other grinding procedures are the same as those in the first example of the embodiment described above.

In the first example of the above-described embodiment, the upper plate 17 corresponding to the first clamping member, the axial supply passages 56 and 56 that are fluid supply passages, and the radial supply passages 57 and 57 are formed. 50 is provided separately, but a configuration in which both the members 17 and 50 are integrally provided may be employed. That is, when implementing the present invention, the member forming the fluid supply passage can be formed directly on the first clamping member, or provided separately from the first clamping member. It is also possible to form a member that is coupled and fixed so as to be rotatable in synchronization with the motor.
The fluid supplied by the fluid supply means can be not only liquid but also gas (for example, air).
Furthermore, in the first example of the above-described embodiment, a configuration is used in which the lower board 16 is rotationally driven by the motor 49, but a configuration in which the upper board is rotationally driven without rotating the lower board is adopted. You can also do it. In this case, the structure which provides a friction brake in the said lower board or the member rotated integrally with this lower board can be employ | adopted.
Further, it is possible to adopt a configuration in which the lower board, the upper board, and the cage are all driven by a drive source. When such a configuration is adopted, the rotational speed of the lower board and the upper board are made different by adjusting the rotational speed of the drive source and the speed reducer, or the lower board (or the lower board rotates integrally). It is possible to adopt a configuration in which the rotational speeds of the lower board and the upper board are made different by providing a friction brake on either the member) or the upper board (or a member that rotates integrally with the upper board).
In addition, when the structure which rotationally drives any one or both of a lower board and an upper board with a holder | retainer, the rotation direction and rotational speed of each of these members are the rotation speed of each tapered roller at the time of processing, and It can be determined as appropriate in relation to the revolution speed.

DESCRIPTION OF SYMBOLS 1 Tapered roller bearing 2 Outer ring 3 Inner ring 4 Tapered roller 5 Cage 6 Outer ring raceway 7 Inner ring raceway 8 Large diameter side flange 9 Small diameter side flange 10 Small diameter end surface 11 Axial inner side surface 12 Large diameter side end surface 13 Axial inner side surface DESCRIPTION OF SYMBOLS 14 End face grinding device of a tapered roller 15 Main axis | shaft 16 Lower board 17 Upper board 18 Cage 19 Fluid supply means 20 Roller supply means 21 Grinding wheel 22 Roller discharge means 23 Guide member 24 Pulling means 25 Lower board side disk part 26 Lower board side shaft part 27 Lower panel side flange 28 Lower panel side rolling surface 29 Inward flange part 30 Housing 31 Fixed cylinder part 32 Rolling bearing 33 Circular ring part 34 Conical cylinder part 35 Upper panel side flange part 36 Small diameter cylindrical surface part 37 Large diameter cylindrical surface part 38 Step part 39 Upper board side rolling surface 40 Cage side annular part 41 Cage side shaft part 42 Through hole 43 Pillar part 44 Pocket 45 Shoe 46 Internal space 47 Ball bush Interview 48 rolling bearing 49 motor 50 supply ring 51 induces Release 52 supply box 53 inward flange portion 54 outer direction collar portion 55 through hole 56 axially supply passage 57 radial supply passage 58 friction brake 59 rolling bearing 60 cylindrical portion 61 yen Ring portion 62 Base portion 63 Supply port 64 Screw hole 65 Supply through-hole 66a, 66b, 66c, 66d Wall portion 67 Fixed portion 68 First guide member 69 Second guide member 70 First guide curved surface portion 71 Second guide curved surface portion

Claims (9)

A main shaft, a first clamping member, a second clamping member, a cage, a grindstone, and a fluid supply means,
Of these, the first clamping member is formed in an annular shape, has a first rolling surface over the entire circumference at the radially outer end of one axial side surface thereof, and is concentric with the main shaft and rotates with respect to the main shaft. It is provided in a possible state,
The second clamping member is formed in an annular shape, has a second rolling surface over the entire circumference at a radially outer end of a side surface facing one axial side surface of the first clamping member, and is concentric with the main shaft. Is provided in a state capable of rotating with respect to the main shaft,
The retainer is formed in an annular shape, and has a plurality of axially opposite ends and a radially outer end that are open at a plurality of locations in the circumferential direction of the radially outer end, and has pockets for holding the tapered rollers in a freely rollable manner. In the internal space formed in the intermediate portion in the axial direction between the first clamping member and the second clamping member, it is provided concentrically with the main shaft in a state capable of rotating with respect to the main shaft,
The grindstone is provided on the outer side in the radial direction of the cage in a state that it can rotate around its own central axis,
The fluid supply means is processed by at least a grindstone among tapered rollers held in the pockets via a fluid supply passage formed in the first clamping member or a member coupled to the first clamping member. what der intended for supplying fluid to the small diameter side end face of the tapered roller after being fixed to the part that does not rotate, the upstream side supply for supplying the fluid to the upstream side opening of the fluid supply passage With components ,
The tapered rollers held in the pockets are pressed in the axial direction between the first rolling surface of the first clamping member and the second rolling surface of the second clamping member. When the tapered roller rotates around its own central axis and revolves around the central axis of the main shaft, the large-diameter end face of each tapered roller is pressed against the rotated grindstone. By processing the large diameter side end face of each of these tapered rollers into a spherical shape,
Each tapered roller after processing is an end grinding device for tapered rollers that is discharged radially outward from an opening on the radially outer end side of each pocket at a predetermined position. A main shaft, a first clamping member, a second clamping member, a cage, a grindstone, and a fluid supply means,
Of these, the first clamping member is formed in an annular shape, has a first rolling surface over the entire circumference at the radially outer end of one axial side surface thereof, and is concentric with the main shaft and rotates with respect to the main shaft. It is provided in a possible state,
The second clamping member is formed in an annular shape, has a second rolling surface over the entire circumference at a radially outer end of a side surface facing one axial side surface of the first clamping member, and is concentric with the main shaft. Is provided in a state capable of rotating with respect to the main shaft,
The retainer is formed in an annular shape, and has a plurality of axially opposite ends and a radially outer end that are open at a plurality of locations in the circumferential direction of the radially outer end, and has pockets for holding the tapered rollers in a freely rollable manner. In the internal space formed in the intermediate portion in the axial direction between the first clamping member and the second clamping member, it is provided concentrically with the main shaft in a state capable of rotating with respect to the main shaft,
The grindstone is provided on the outer side in the radial direction of the cage in a state that it can rotate around its own central axis,
The fluid supply means is a cylindrical member formed separately from the first clamping member and coupled and fixed to the inner diameter side of the first clamping member so as to be rotatable integrally with the first clamping member. For supplying fluid to the small-diameter side end face of the tapered roller after being processed by the grindstone among the tapered rollers held in the pockets through the formed fluid supply passage,
The tapered rollers held in the pockets are pressed in the axial direction between the first rolling surface of the first clamping member and the second rolling surface of the second clamping member. When the tapered roller rotates around its own central axis and revolves around the central axis of the main shaft, the large-diameter end face of each tapered roller is pressed against the rotated grindstone. By processing the large diameter side end face of each of these tapered rollers into a spherical shape,
Each tapered roller after processing is an end grinding device for tapered rollers that is discharged radially outward from an opening on the radially outer end side of each pocket at a predetermined position. An annular guide plate having an outer diameter larger than the outer diameter of the cylindrical member is integrated with the cylindrical member at an end of the cylindrical member on the side disposed in the inner space. Alternatively, the fluid that is provided integrally and flows out from the downstream opening of the fluid supply passage flows through the side surface on the cylindrical member side of the side surface of the guide plate, and the small diameter of each tapered roller The end surface grinding apparatus for tapered rollers according to claim 2 , which is supplied to a side end surface. The said fluid supply means is fixed to the part which does not rotate, The upstream supply member for supplying the said fluid to the upstream opening part of the said fluid supply path is provided in any one of Claims 2-3 Tapered roller end face grinding device described in 1. The upstream supply member includes fluid supply position adjusting means capable of adjusting a position in a circumferential direction at which the fluid is supplied to an upstream opening of the fluid supply passage during processing. Item 3. The tapered surface end grinding apparatus according to Item 1 or 4 . The end surface grinding apparatus for a tapered roller according to any one of claims 1 to 5, wherein the fluid is the same as a grinding liquid supplied to a grinding portion of the grindstone and each tapered roller. A method for manufacturing a tapered roller having a spherical large-diameter end face,
A method for manufacturing a tapered roller, wherein the end surface grinding device of the tapered roller according to any one of claims 1 to 6 is used to grind the large-diameter side end surface of the tapered roller. An outer ring having an outer ring raceway on the inner peripheral surface;
An inner ring having an inner ring raceway on the outer peripheral surface;
A method of manufacturing a tapered roller bearing, comprising a plurality of tapered rollers arranged to roll between the outer ring raceway and the inner ring raceway,
A method for manufacturing a tapered roller bearing, wherein the tapered roller is manufactured by the method for manufacturing a tapered roller according to claim 7. A rotating device manufacturing method in which a tapered roller bearing is incorporated in a rotation support portion,
A method for manufacturing a rotating device, wherein the tapered roller bearing is manufactured by the method for manufacturing a tapered roller bearing according to claim 8.

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